- #1
Javier Lopez
- 75
- 3
Homework Statement
There is a charged particle at height h over a circular area of radii R, then I have to calculate the capacitance. This is useful when somebody want to calculate energy harvesting, antennas, sensors that measures ions in plasma devices and particle accelerators.
https://lh5.googleusercontent.com/_-xHmEdtx4XEzINcGpKFP-fj3_32U7U4xYBm4pFLUqTMQlHc_zC_n-WsELCXBnDHBY-YqKgLecMmePFSRpde=w1920-h950 [/B]
Homework Equations
Q=CV
Gauss law, integral form that can be seen in (1)
The Attempt at a Solution
https://lh5.googleusercontent.com/VcIzJXKDsaXa8zi5Q2DS-R9z1DkDsRNvtKsq6lFQGvfzdnjcT04kVL9xhNk2Vi4-HZfd4I-YWiFM1hU2D7QK=w1920-h950
I am not happy with my solution because the plate down has also charges and I do not know if those charges have to be included in the equation
Also there is the assumption that all electric field lines goes straight to the plate that could be true if the particle is close to it.